Public switched telephone network call routing using dyamic asynchronous mode transfer bearer voice trunking
AssigneeOresis Communications
InventorsGeorge Shenoda, Andrew P. Alleman
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Abstract
The distributed architecture switch of the invention provides a scalable, flexible switching device to route telephone calls and other data (e.g., frame relay, ISDN) over an asynchronous transfer mode (ATM) network. The switch includes multiple service modules that can be geographically disparate and function as a single switching device. The multiple service modules are coupled to a system controller that controls the service modules and passes messages between the service modules.
Claims18
A method for jointly facilitating a telephone call by a first device and a second device, the method comprising:
- communicating routing information between the first device and the second device using a first signaling protocol and a first network;
- allocating an available virtual channel in a cell based bearer connection between the first device and the second device established using a second cell based signaling protocol and over a second network, with said cell based bearer connection having a predetermined plurality of fixed size virtual channels for facilitating up to a corresponding plurality of telephone calls, and cells of said cell based bearer connection being transmitted continuously in accordance with said second cell based signaling protocol as long as at least one of the virtual channels is allocated to facilitate a telephone call;
- and
- facilitating said telephone call through said allocated virtual channel of said cell based bearer connection.
An apparatus for jointly facilitating telephone calls with another apparatus, the apparatus comprising:
- means for communicating routing information to said other apparatus using a first signaling protocol and a first network;
- means for allocating a virtual channel in a cell based bearer connection between the apparatuses using a second cell based signaling protocol and over a second network, with said cell based bearer connection having a predetermined plurality of fixed size virtual channels for facilitating up to a corresponding plurality of telephone calls, and cells of said cell based bearer connection being transmitted continuously in accordance with said second cell based signaling protocol as long as at least one of the virtual channels is allocated to facilitate a telephone call;
- and
- means for facilitating said telephone call through said allocated virtual channel of said cell based bearer connection.
A distributed system comprising:
- a first device;
- a network coupled to the first device;
- and
- a second device coupled to the network;
- wherein the first and the second devices jointly facilitating a phone call over a virtual channel in a cell based bearer connection between the first and second devices established using a cell based signaling protocol over said network, with said cell based bearer connection having a predetermined plurality of fixed size virtual channels for facilitating up to a corresponding plurality of telephone calls, and cells of said cell based bearer connection being transmitted continuously in accordance with said cell based signaling protocol as long as at least one of its virtual channels is allocated wot facilitate a telephone call.
Dependencies are inferred from the claim text.